His business manager Dean A. Avedon confirmed the news to EW.

1978 is when he finally landed a steady series regular role on the popular sci-fi comedy starringRobin WilliamsandPam Dawber.

Janis spent four years onMork & Mindyplaying Fred McConnell, the lovingly overprotective father of Dawber’s character.

Mork and Mindy

Actor Conrad Janis was best known as Mindy’s dad on the hit sitcom ‘Mork & Mindy’.ABC Photo Archives/Disney General Entertainment Content via Getty Image

The role would lead to multiple appearances on shows likeSt.

ElsewhereandMurder, She Wrote, plus a recurring character onFrasiernamed Albert.

Saturday Nightin 1992 andBen Stiller’sThe Cable Guyin 1996.

Mork and Mindy

Robin Williams, Conrad Janis, and Jonathan Winters on ‘Mork and Mindy.'.ABC Photo Archives/Disney General Entertainment Content via Getty Image

He also would appear in 12 Broadway shows throughout his lifetime.